While you are driving, your vehicle constantly monitors sensors throughout the car to ensure that everything works as intended. One of the systems being monitored is the anti-lock braking system (ABS). The ABS monitors the wheels to make sure that they are all turning at approximately the same speed. The system can then use the brakes to keep the vehicle under control during slippery situations. The uses sensors at each wheel to monitor their rotational speed. A computer monitors the signals from all four wheels and the position of the brake pedal to make sure that the vehicle is stable and under control. If the computer notices any abnormal signals, or the lack of a signal from any of the sensors, it will turn the ABS light on, to alert the driver of an issue. In addition to monitoring the wheel speed sensors, the computer can turn the ABS light on for other reasons like low brake fluid levels or a blown fuse. Some ABS systems may flash the light a few times and then leave it on constantly. The number of flashes refers to a trouble code and can help you identify the issue. Refer to the vehicle repair guide or information online to determine what your ABS system is telling you when it flashes.
When the ABS light comes on, the first thing you should do is find a safe place to stop the vehicle, shut it off, and then start it up again. This will make the computer recheck all of the sensors for any abnormalities. Just like your computer at home, doing a simple reset may fix the issue and the light will shut off. Unfortunately, most of the time itвs not this easy and there may be something wrong in the system that needs to be identified. Your best option is to have a certified technician hook a scan tool up to the car and
that are present. There are a few things you can check at home if you have some tools handy. You can remove the wheels to inspect the wheel speed sensors and wires for any damage. Double check to make sure that the fuse for the ABS system hasnвt blown either. Keep in mind that replacing a blown fuse is only a temporary fix and the fuse will likely blow again at some point. You will need to identify what is causing the fuse to blow in order to fix the issue entirely, and a scan tool will most likely be necessary.
Is it safe to drive when the ABS light comes on? Keep in mind that the vehicle may still be okay to drive even when the. Unless there are other brake warning lights on along with the ABS, you will still have normal braking capabilities. The vehicle wonвt be able to assist you in the event of skidding however, so take extra care when driving. The vehicle should not be driven if you feel any loss in braking power when this light is on. In this case, have the vehicle towed to a shop or have one of our certified technicians come to you to help. An ABS light (anti-lock braking system) that is stuck on doesn t necessarily mean you need an ABS brake repair. The light is generally located on the dashboard on your control console next to the speedometer and gauges, and it could be triggered by issues other than problems with the anti-lock brakes. The light staying on can be caused by something as simple as the emergency brake or more complicated things like a loss of brake fluid and pressure or bad hydraulic valves. Check the Emergency Brake Sometimes the emergency brake will not go down far enough and keep the light on, even though the brakes are actually not applied.
The emergency brake does not run on the same system as the main brake line, but if the E-brake is in working condition, it can still be applied in a situation where the main lines fail. It can also be applied as a preventative measure in areas with steep driving terrain. However, this light can get stuck on if the handle is notshut off properly. Check your E-brake to be sure that it is in the proper down position. Adjust a few times and see if the light goes off. Losing Hydraulic Pressure During your ABS brake light inspection, you will want to check the levels in your brake reservoir to see if it has lost a substantial amount of brake fluid. The warning light can come on from low levels of the fluid in the brake system. Alternatively, if the levels are topped off, it could be that you are losing pressure on one side of the vehicle, which can be dangerous. Losing this pressure can cause the brakes to fail while on the road, and the danger increases as the vehicle increases in speed, as the system will not be as effective in stopping the car.
Check Your Hydraulic Circuits Your vehicle has two hydraulic circuits, and you will want to check those as well. The dual hydraulic system acts as a fail safe in case the main line fails, so there is still the chance that the second set of brakes will kick in and allow the vehicle to stop. These are built into a check valve system that allows one to turn on as the other shuts off. If you notice broken parts in the hydraulic circuits, you can change them out, but if the ABS light stays on, you may have a more serious problem in the actual themselves. The main thing to know in this situation is that if the light remains on after you have checked through all the systems, you will want to get it checked professionally to prevent serious injury or death when operating the vehicle. An ABS brake repair will be needed, and mechanic shops will be able to more thoroughly investigate the entire system for leaks or cracks in the brake fluid reservoir and the brake lines, which could be the source of your pressure loss.